apt-get repositories

Is there a list of apt-get repositories for Debian Sarge? The ones installed as part of 'The Perfect Setup' do not have the libsasl2 sasl2-bin libsasl2-modules packages...and I can go no further in the installation. Any help greatly appreciated.

I changed my /etc/apt/sources.list to match yours. I tried 'apt-cache search libsas12' and got the following error message: - stat (2 No such file or directory). When I try apt-get update the system hangs on 'deb http://security.debian.org/ stable/updates main'. Any suggestions??? Thanks